What are the advantages of investment casting? I believe many of you are still unclear. In order to improve your mastery, the following editorial will introduce this issue in detail. If you are interested, let's have a look! If you are also interested, come here to inquire about it.
Investment casting is also a relatively popular commodity now. But many people are its role are still do not understand. The first thing we need to know is that the shape of the investment casting is generally more complex. The small diameter of the forgeable hole on the casting can be up to 0.5mm, and the small thickness of the casting is 0.3mm. In production, some parts consisting of several parts can be combined together. In this case, it is natural to change the construction of the part, to design it as an overall part and to carry out forging directly through investment casting, in order to save processing time and metal material consumption, and to make the construction of the part more reasonable. Especially its high precision, generally reaching ct4-6 (sand casting) ct10-13, die-casting for ct5-7). Naturally, due to the complexity of the investment casting process, many factors affecting the dimensional accuracy of the casting, the net weight of the investment casting is mostly zero to dozens of cattle (from a few grams to a dozen kilograms not more than 25KG). Investment casting production of large castings is more troublesome. Investment casting process is complex, difficult to control, expensive materials, for small parts with complex shapes, high precision requirements or unmachinable, such as turbine engine blades.
Investment casting uses and consumes expensive materials and is suitable for small parts with complex shapes, high accuracy requirements or unmachinable, such as turbine engine blades. Naturally, it is also mainly used for the internal cavity Kor-pressure surface smoothness, thus, the investment in surface smoothness is also higher. In addition, you can see that the casing is made of heat-resistant special adhesive and fire-resistant material made of fireproof plating and coated on the molten mold. The surface inside the cavity that is in direct contact with the molten metal has a high degree of smoothness. Therefore, today I would like to tell you that the surface smoothness of the investment casting parts of the melt die is higher than the general casting, generally can reach RA.1.6 ~ 3.2 μm. Of course, it has the advantage that the melt die casting has high dimensional accuracy and surface smoothness, so it can reduce the processing workload, only the parts processing capacity is slightly higher, and even some castings only need to cut and polish capacity, so here you need to know the melt die castings can be used without mechanical processing. As you can see, the choice of investment casting method can greatly save mechanical equipment and processing time, and greatly save metal raw materials.
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